Why JavaScript is the Suckest Language

JavaScript is truly the suckest language. There's no easy way to test object equality, makes you change algorithms fundamentally.

and JavaScript syntax, is the worst possible. Code written by others is not readable.

why is js syntax unreadable? because

it has function expression, but it does not have the usual function
programing languages's design to control it. JS is mostly imperative and
prototype OOP, incompatible with function programing. Thus, you have passing
function as argument and return function. This feature by itself, if used without fine control, creates incomprehensible code
(e.g. y-combinator).
(e.g. haskell has types, composition, currying, etc, to control complex function semantics.)

And JavaScript syntax is C/Java-like, provides no syntactic support for function programing. The passing function style becomes unreadable quickly.
(e.g. lisp solves syntax problem by almost pure nested parenthesis, and haskell etc provides linear syntax (no parenthesis), and syntax that support semantic features such as currying, lambda, nesting, etc.)

Further, JavaScript design that was trying to emulate Java, created the following entities with exceptionally convoluted semantics.